Periodically repeated signal identification and accidental anomaly detection method

The invention discloses a periodic repetition signal identification and accidental anomaly detection method, which comprises the following steps of: sampling standard sine waves and triangular waves, and constructing a comparison set for signal identification; the method comprises the following steps of: acquiring a to-be-identified sample signal, normalizing the sample signal, intercepting a test sequence according to a zero crossing point, and comparing the test sequence with a sampling sequence in a comparison set to complete identification and accidental anomaly detection of the sample signal. 本发明公开了一种周期重复信号识别和偶发异常检测方法，先对标准的正弦波和三角波进行采样，构建用于信号识别的比对集；再采集待识别的样本信号，然后对样本信号进行归一化处理，根据过零点截取测试序列，最后利用测试序列与对比集中的采样序列进行比对，完成样本信号的识别和偶发异常检测。